using System;
using iTextSharp.text;
using iTextSharp.text.pdf;
/*
 * 
 * $Id: LineSeparator.cs,v 1.2 2008/05/13 11:25:38 psoares33 Exp $
 *
 * Copyright 2008 by Paulo Soares.
 *
 * The contents of this file are subject to the Mozilla Public License Version 1.1
 * (the "License"); you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the License.
 *
 * The Original Code is 'iText, a free JAVA-PDF library'.
 *
 * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
 * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
 * All Rights Reserved.
 * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
 * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
 *
 * Contributor(s): all the names of the contributors are added in the source code
 * where applicable.
 *
 * Alternatively, the contents of this file may be used under the terms of the
 * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
 * provisions of LGPL are applicable instead of those above.  If you wish to
 * allow use of your version of this file only under the terms of the LGPL
 * License and not to allow others to use your version of this file under
 * the MPL, indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by the LGPL.
 * If you do not delete the provisions above, a recipient may use your version
 * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the MPL as stated above or under the terms of the GNU
 * Library General Public License as published by the Free Software Foundation;
 * either version 2 of the License, or any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
 * details.
 *
 * If you didn't download this code from the following link, you should check if
 * you aren't using an obsolete version:
 * http://www.lowagie.com/iText/
 */

namespace iTextSharp.text.pdf.draw {

    /**
    * Element that draws a solid line from left to right.
    * Can be added directly to a document or column.
    * Can also be used to create a separator chunk.
    * @author   Paulo Soares
    * @since    2.1.2
    */
    public class LineSeparator : VerticalPositionMark {
        
        /** The thickness of the line. */
        protected float lineWidth = 1;
        /** The width of the line as a percentage of the available page width. */
        protected float percentage = 100;
        /** The color of the line. */
        protected Color lineColor;
        /** The alignment of the line. */
        protected int alignment = Element.ALIGN_CENTER;
        
        /**
        * Creates a new instance of the LineSeparator class.
        * @param lineWidth      the thickness of the line
        * @param percentage the width of the line as a percentage of the available page width
        * @param color          the color of the line
        * @param align          the alignment
        * @param offset     the offset of the line relative to the current baseline (negative = under the baseline)
        */
        public LineSeparator(float lineWidth, float percentage, Color lineColor, int align, float offset) {
            this.lineWidth = lineWidth;
            this.percentage = percentage;
            this.lineColor = lineColor;
            this.alignment = align;
            this.offset = offset;
        }

        /**
        * Creates a new instance of the LineSeparator class with
        * default values: lineWidth 1 user unit, width 100%, centered with offset 0.
        */
        public LineSeparator() {
        }

        /**
        * @see com.lowagie.text.pdf.draw.DrawInterface#draw(com.lowagie.text.pdf.PdfContentByte, float, float, float, float, float)
        */
        public override void Draw(PdfContentByte canvas, float llx, float lly, float urx, float ury, float y) {
            canvas.SaveState();
            DrawLine(canvas, llx, urx, y);
            canvas.RestoreState();
        }

        /**
        * Draws a horizontal line.
        * @param canvas the canvas to draw on
        * @param leftX      the left x coordinate
        * @param rightX the right x coordindate
        * @param y          the y coordinate
        */
        public void DrawLine(PdfContentByte canvas, float leftX, float rightX, float y) {
            float w;
            if (Percentage < 0)
                w = -Percentage;
            else
                w = (rightX - leftX) * Percentage / 100.0f;
            float s;
            switch (Alignment) {
                case Element.ALIGN_LEFT:
                    s = 0;
                    break;
                case Element.ALIGN_RIGHT:
                    s = rightX - leftX - w;
                    break;
                default:
                    s = (rightX - leftX - w) / 2;
                    break;
            }
            canvas.SetLineWidth(LineWidth);
            if (LineColor != null)
                canvas.SetColorStroke(LineColor);
            canvas.MoveTo(s + leftX, y + offset);
            canvas.LineTo(s + w + leftX, y + offset);
            canvas.Stroke();
        }
        
        /**
        * Setter for the line width.
        * @param lineWidth  the thickness of the line that will be drawn.
        */
        public float LineWidth {
            get {
                return lineWidth;
            }
            set {
                lineWidth = value;
            }
        }

        /**
        * Setter for the width as a percentage of the available width.
        * @return   a width percentage
        */
        public float Percentage {
            get {
                return percentage;
            }
            set {
                percentage = value;
            }
        }

        /**
        * Setter for the color of the line that will be drawn.
        * @param color  a color
        */

        public Color LineColor {
            get {
                return lineColor;
            }
            set {
                lineColor = value;
            }
        }

        /**
        * Setter for the alignment of the line.
        * @param align  an alignment value
        */
        public int Alignment {
            get {
                return alignment;
            }
            set {
                alignment = value;
            }
        }
    }
}